Mercedes-Benz SL320 Brake Master Cylinder Replacement at your home or office.

Our mobile mechanics offer services 7 days a week. Upfront and transparent pricing.

Estimate price near me

Service Location

Customer Ratings

(5)

Included for free with this service

Online Booking

Mechanic comes to you

12-month / 12k-mile warranty

Free 50 point safety inspection

Our certified mobile mechanics can come to your home or office 7 days a week between 7 AM and 9 PM.

Customer Ratings

(5)

Brake Master Cylinder Replacement Service

How much does a Brake Master Cylinder Replacement cost?

On average, the cost for a Mercedes-Benz SL320 Brake Master Cylinder Replacement is $314 with $219 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
1994 Mercedes-Benz SL320L6-3.2LService typeBrake Master Cylinder ReplacementEstimate$553.83Shop/Dealer Price$681.04 - $1023.30
1996 Mercedes-Benz SL320L6-3.2LService typeBrake Master Cylinder ReplacementEstimate$600.32Shop/Dealer Price$739.84 - $1091.33
1997 Mercedes-Benz SL320L6-3.2LService typeBrake Master Cylinder ReplacementEstimate$600.32Shop/Dealer Price$739.84 - $1091.32
1995 Mercedes-Benz SL320L6-3.2LService typeBrake Master Cylinder ReplacementEstimate$600.32Shop/Dealer Price$739.77 - $1091.20
Show example Mercedes-Benz SL320 Brake Master Cylinder Replacement prices

What is the brake master cylinder and how does it work?

The brake master cylinder has a piston that pressurizes fluid in the brake lines to each wheel cylinder as you apply force to the brake pedal. That pressure moves the pistons that are in the wheel cylinders. As the pistons in those wheel cylinders move, they force the brake pads or shoes tightly against the rotors or drums allowing the car to stop quickly.

The size of the pistons in the master cylinder and in the wheel cylinders are carefully selected when designing a car. This allows drivers to apply moderate pressure on the brake pedal when stopping, but creates tremendous pressure applied at the wheel cylinders. A car can then stop quickly even at high speeds. Depending on how much force is applied to the brake pedal, the pressure in a car’s brake lines will typically be in the range of 800 PSI to 2,000 PSI.

Master Cylinder

When to replace the master cylinder?

  • External fluid leaks. There should be no fluid visible on the external surfaces of any portion of the master cylinder or the plastic fluid reservoir.
  • Low, slowly falling, or spongy brake pedal. Faulty internal seals on the piston can cause internal leaks and also seepage of brake fluid into the power assist brake booster. Internal leaks will typically be accompanied by a low pedal, a spongy brake pedal, or a pedal that slowly sinks as you maintain pressure. In all cases, you will experience reduced braking abilities.
  • Discolored brake fluid. No brake fluids, other than those specified for the year, make, and model, are fully compatible with a car’s internal rubber seals in the master cylinder. Discoloration of brake fluid can also occur due to moisture and particulate contaminants in the fluid.
  • Warning lights on the dash. If the brake system warning light illuminates, there are several potential causes but failure of the master cylinder is in the list of causes that would have to be investigated.

How do mechanics replace the brake master cylinder?

  • On vehicles with power brakes, the master cylinder is bolted to the metal housing of the power brake booster. There is usually an electrical plug connecting to a brake fluid level sensor on the master cylinder reservoir and that plug must be disconnected.
  • Once all steel brake lines are disconnected from the master cylinder, the master cylinder is unbolted from the brake booster and removed from the vehicle.
  • The new master cylinder must be bench-bled to expel air from internal passages that contain the piston. Then the new master cylinder is bolted to the brake booster and the brake lines are reattached. The electrical plug for the fluid level sensor is reconnected.
  • Whenever a new master cylinder is installed, brakes lines to wheel positions must be bled to remove air, old fluid and contaminants. If your vehicle is equipped with anti-lock brakes, the mechanic may use a bidirectional scan tool during brake bleeding to actuate the ABS pump, thus ensuring that all air is removed from the complex valving in the ABS system.
  • All brake line connections that were removed during the master cylinder replacement are inspected for any leakage and the vehicle is road tested to ensure normal operation of the brakes.

Is it safe to drive with a master cylinder problem?

No, any fault in the master cylinder, which is part of the braking system creates a safety risk. A fully operational brake system is essential to quickly stopping your car. Driving a vehicle isn’t safe, if the master cylinder is leaking or has other faults, as braking distances might be longer than normal. The braking system on a vehicle is among the most important safety systems and must be fully functional to safely drive your vehicle.

When replacing the master cylinder keep in mind:

  • The master cylinder is only one component of many in a vehicle’s braking system. During replacement of the master cylinder, all vehicle braking system components should be inspected to ensure maximum braking power is available.
  • The amount of friction material remaining on the brake pads and brake shoes should be verified.
  • Brake lines and flexible rubber hoses at each wheel position should be inspected for corrosion and deterioration.
  • The power brake booster should be evaluated to ensure that power assist is working properly.

Fast and easy service at your home or office

Backed by 12-month, 12.000-mile guarantee


Meet some of our expert Mercedes-Benz mechanics

Real customer reviews from Mercedes-Benz owners like you.

Excellent Rating

(5)

Rating Summary
5
0
0
0
0
5
0
0
0
0

Robert

12 years of experience
125 reviews
Robert
12 years of experience
Mercedes-Benz SL320 L6-3.2L - Car is not starting - Silver Spring, Maryland
Robert was early to our appointment, diligent, thorough, personable, efficient and friendly.

Maurice

21 years of experience
39 reviews
Maurice
21 years of experience
Mercedes-Benz SL320 L6-3.2L - Fuel is leaking from gas tank - Charleston, South Carolina
On time. Gracious. Patient. Analytical. Knowledgeable.

Chris

15 years of experience
312 reviews
Chris
15 years of experience
Mercedes-Benz SL320 L6-3.2L - Back To School Promo - San Diego, California
Chris does excellent work, he gets right down to business and finishes ASAP so you can get on with your day!

Attila

19 years of experience
884 reviews
Attila
19 years of experience
Mercedes-Benz SL320 L6-3.2L - Battery - Avenel, New Jersey
Outstanding

Excellent Rating

(5)

Rating Summary
5
0
0
0
0
5
0
0
0
0
Number of Mercedes-Benz SL320 services completed
55+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS
1000+
experts on our platform

Recent articles & questions

P2140 OBD-II Trouble Code: Throttle/Pedal Position Sensor/Switch E / F Voltage Correlation
P2140 P2140 code definition Throttle/Pedal Position Sensor/Switch E / F Voltage Correlation Related Trouble Codes: P2135: Throttle/Pedal Position Sensor/Switch A / B Voltage Correlation P2136: Throttle/Pedal Position Sensor/Switch A / C Voltage Correlation P2137: Throttle/Pedal Position Sensor/Switch B / C...
How to Drive Your Vehicle Safely at Night
Driving Driving at night (https://www.yourmechanic.com/article/top-10-tips-to-be-a-better-driver-at-night) is sometimes more difficult than daytime driving, especially in poorly lit areas. Also, as we age, declining eyesight can impact night driving. To drive safer at night, make sure to keep a few tips in...
P2076 OBD-II Trouble Code: Intake Maniforld Tuning Valve Position Sensor/Switch Circuit Range/Performance
Diagnostic Trouble Code (DTC): P2076 P2076 code definition The P2076 diagnostic trouble code is an indication that there is a range/performance issue...

How do I adjust the instrument panel brightness?

The instrument panel controls are illuminated when the headlights are on, to help you see your controls even when it is dark out. The brightness of the instrument panel controls can be adjusted with the instrument panel illumination control. The...

Can an overheated engine cause a knock sensor to fail?

Hi there. From the description you have given, seems odd hitting a bird would damage the radiator, the condenser sits in front of the radiator. Regardless, high engine temperatures can affect sensors. The knock sensor could have failed due to...

My 1999 Nissan altima radiator is leaking at the top

Hi Chelsie. Thanks for contacting us today. It's likely that either the neck of the radiator has a crack or the radiator cap is broken. Overtime, the radiator cap will naturally wear out, so I would start by replacing the...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1 (855) 347-2779 · hi@yourmechanic.com